Evaluation of blood pressure pulse wave velocity and arterial relaxation constant

The paper discussed the relationship between blood pressure pulse wave velocity and arterial relaxation constant at brachial artery. The Windkessels model of brachial artery was assumed to simulate blood pressure decay waveform. The pulse wave velocity and noninvasive blood pressure wave form were acquired along with invasive aortic pressure. The result showed that the relaxation constant of aortic pressure waveform and brachial blood pressure waveform were -0.5±0.067 and -0.549±0.067 respectively. The relationship of higher pulse wave velocity and relaxation constant was 0.8.